For centuries, geologists have recognized that the rocks that line riverbeds tend to be smaller and rounder further downstream. But these experts have not agreed on the reason these patterns exist. Abrasion causes rocks to grind down and become rounder as they are transported down the river. Does this grinding reduce the size of rocks significantly, or is it that…
Read MoreCategory: Last Call
Where Did That Rock Come From?
According to space.com, after a decade of exploring the Martian surface, the scientists overseeing the rover Opportunity thought they’d seen it all. That was until a rock mysteriously appeared a few feet in front of the six-wheeled rover.
Read MoreFrankly Speaking
I have been covering the aggregates industry for the better part of the past 25 years, and over the lion’s share of that time period, there has always been one thing you could totally count on: Frank Cargould.
Read MoreReporting from the Field
By Mark S. Kuhar At Rock Products, I believe in reporting from the field, not from behind a desk.
Read MoreJohn Deere Challenges Andes Mountains
By Mark S. Kuhar This past May, engineers from John Deere traveled to the Atacama Desert Region of Northern Chile to test the performance of the 460E Articulated Dump Truck (ADT) at high altitude. The mountains of Chile are filled with active mining sites that need the hauling capacity of the 460E ADT. Engineers worked to ensure the truck would…
Read MoreGo West for the Best
By Mark S. Kuhar Eugene, Ore., is about as far West as you can go without falling in the Pacific Ocean. It was there that KPI-JCI and Astec Mobile Screens hosted more than 60 authorized North American dealers at its annual National Dealer Conference.
Read MoreOldest Rock Art Discovered
By Mark S. Kuhar A new high-tech analysis led by a University of Colorado Boulder researcher shows the oldest known petroglyphs in North America, which are cut into several boulders in western Nevada, date to at least 10,500 years ago and perhaps even as far back as 14,800 years ago.
Read MoreKobelco’s Back
By Mark S. Kuhar Kobelco Construction Machinery USA held a ribbon-cutting ceremony at its new Houston-based North American Headquarters following the relaunch of the brand as an independent product line earlier this year. The event was attended by nearly all of Kobelco’s recently signed dealers, a host of local and national media and several local officials, as well as Kobelco…
Read MoreLafarge: ‘Building Better Cities to Meet Demand of Urbanization
By Mark S. Kuhar Lafarge North America launched its new brand positioning, Building Better Cities, representing its pledge to offer solutions that contribute to meeting the many challenges posed by the growing trend of urbanization. Lafarge’s new brand positioning opens a promising new niche for the company to be a more involved player in sustainable construction and resilient building for…
Read MoreYoung Leaders Gather in The Big Easy
By Josephine Smith The National Stone, Sand & Gravel Association Young Leaders Annual Meeting took place May 14-18 in New Orleans. Rock Products Assistant Editor Josephine Smith was there.
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